GDI 22 Probe ModeGDI 22 Probe Mode To operate Geo Examiner 22 probes mode, it is necessary to acquire the accessory 22 probe system, module and 2 multi cables as shown. Select 22 PROBES, click START and Geo Examiner scans and visualizes automatically within 20 secs underground data from 11 probes on each of the 2 multi cables. The advantage of acquiring data from many scan points, increases the image resolution and speeds up the scan process. To compare, the 4 probe